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Show user-visible error when no camera is available.

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This commit is contained in:
Martijn Braam
2024-04-13 01:53:42 +02:00
parent b615d23de1
commit 421c4afdfa
3 changed files with 91 additions and 18 deletions
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44
src/main.c
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@@ -63,6 +63,9 @@ GtkWidget *scanned_codes;
GtkWidget *preview_top_box;
GtkWidget *preview_bottom_box;
GtkWidget *message_box;
GtkWidget *message_label;
GtkWidget *flash_button;
GtkWidget *iso_button;
GtkWidget *shutter_button;
@@ -89,6 +92,13 @@ remap(int value, int input_min, int input_max, int output_min, int output_max)
return (int)result;
}
static void
display_error(const char *message)
{
gtk_label_set_label(GTK_LABEL(message_label), message);
gtk_widget_set_visible(message_box, true);
}
bool
check_window_active()
{
@@ -162,8 +172,7 @@ update_state(const mp_state_main *new_state)
state.focus.max = new_state->focus.max;
state.focus.manual = new_state->focus.manual;
state.has_auto_focus_continuous =
new_state->has_auto_focus_continuous;
state.has_auto_focus_continuous = new_state->has_auto_focus_continuous;
state.has_auto_focus_start = new_state->has_auto_focus_start;
state.preview_buffer_width = new_state->preview_buffer_width;
@@ -357,10 +366,8 @@ position_preview(float *offset_x, float *offset_y, float *size_x, float *size_y)
}
int scale_factor = gtk_widget_get_scale_factor(preview);
int top_height =
gtk_widget_get_height(preview_top_box) * scale_factor;
int bottom_height =
gtk_widget_get_height(preview_bottom_box) * scale_factor;
int top_height = gtk_widget_get_height(preview_top_box) * scale_factor;
int bottom_height = gtk_widget_get_height(preview_bottom_box) * scale_factor;
int inner_height = state.preview_height - top_height - bottom_height;
float scale = (float)MIN(state.preview_width / (float)buffer_width,
@@ -519,6 +526,8 @@ preview_resize(GtkWidget *widget, int width, int height, gpointer data)
if (state.preview_width != width || state.preview_height != height) {
state.preview_width = width;
state.preview_height = height;
if (state.configuration->count == 0)
return TRUE;
update_io_pipeline();
}
@@ -898,9 +907,11 @@ flash_button_clicked(GtkWidget *button, gpointer user_data)
static void
on_realize(GtkWidget *window, gpointer *data)
{
if (state.configuration->count == 0) {
return;
}
GtkNative *native = gtk_widget_get_native(window);
mp_process_pipeline_init_gl(gtk_native_get_surface(native));
state.camera = state.configuration->cameras[0];
update_io_pipeline();
}
@@ -988,14 +999,14 @@ static gboolean
fb_profile_to_state(GValue *value, GVariant *variant, gpointer user_data)
{
const gchar *name;
gboolean state = FALSE;
gboolean fb_state = FALSE;
name = g_variant_get_string(variant, NULL);
if (g_strcmp0(name, "full") == 0)
state = TRUE;
fb_state = TRUE;
g_value_set_boolean(value, state);
g_value_set_boolean(value, fb_state);
return TRUE;
}
@@ -1005,9 +1016,9 @@ state_to_fb_profile(const GValue *value,
const GVariantType *expected_type,
gpointer user_data)
{
gboolean state = g_value_get_boolean(value);
gboolean fb_state = g_value_get_boolean(value);
return g_variant_new_string(state ? "full" : "silent");
return g_variant_new_string(fb_state ? "full" : "silent");
}
static void
@@ -1194,6 +1205,9 @@ activate(GtkApplication *app, gpointer data)
preview_bottom_box =
GTK_WIDGET(gtk_builder_get_object(builder, "bottom-box"));
message_box = GTK_WIDGET(gtk_builder_get_object(builder, "message-box"));
message_label = GTK_WIDGET(gtk_builder_get_object(builder, "message-label"));
g_signal_connect(window, "realize", G_CALLBACK(on_realize), NULL);
g_signal_connect(preview, "realize", G_CALLBACK(preview_realize), NULL);
@@ -1317,7 +1331,11 @@ activate(GtkApplication *app, gpointer data)
g_application_get_dbus_connection(G_APPLICATION(app));
mp_flash_gtk_init(conn);
mp_io_pipeline_start();
if (state.configuration->count > 0) {
mp_io_pipeline_start();
} else {
display_error("No camera found");
}
gtk_application_add_window(app, GTK_WINDOW(window));
gtk_widget_set_visible(window, true);